Thunder Bay Weather History Ontario, Canada

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Past date: Past date must be from 1st Jan, 2009 onwards.

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Daily and hourly data from 1 Jan 2009 onwards.
Yearly Monthly Averages
Monthly Climate Data
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Sat 26 Apr, 2025 Weather in Thunder Bay

Sunrise: 06:46 AM Sunset: 09:05 PM	Moonrise: 06:00 AM Moonset: 08:02 PM	Max: 12.1 °c	Min: 1.5 °c	Avg: 5.8 °c	Precip: 0.00 mm	Max Wind: 14.0 kph

	Sat 26 0:00 am	Sat 26 3:00 am	Sat 26 6:00 am	Sat 26 9:00 am	Sat 26 12:00 pm	Sat 26 3:00 pm	Sat 26 6:00 pm	Sat 26 9:00 pm
Icon
Temp	3.2°c	1.8°c	1.7°c	4.5°c	8.9°c	11.7°c	9.5°c	4.7°c
Wind	9.0 kmph	9.0 kmph	8.6 kmph	7.2 kmph	2.5 kmph	11.9 kmph	14.0 kmph	8.6 kmph
Precip	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	7%	1%	1%	0%	0%	0%	0%	0%
Humidity	78%	82%	83%	73%	58%	55%	61%	71%
Pressure	1028 mb	1029 mb	1030 mb	1031 mb	1030 mb	1028 mb	1027 mb	1027 mb

Thunder Bay Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	-9°C / 17°F	-16°C / 4°F	-12°C / 10°F	77 hours	31.24 mm / 1.23 In	7 days	1018 mb / 31 In
February	-8°C / 18°F	-15°C / 5°F	-11°C / 11°F	77 hours	33.70 mm / 1.33 In	7 days	1019 mb / 31 In
March	-1°C / 30°F	-8°C / 18°F	-5°C / 24°F	96 hours	54.56 mm / 2.15 In	6 days	1018 mb / 31 In
April	4°C / 40°F	-2°C / 28°F	1°C / 34°F	122 hours	80.57 mm / 3.17 In	8 days	1016 mb / 30 In
May	12°C / 54°F	4°C / 40°F	8°C / 47°F	184 hours	81.19 mm / 3.20 In	6 days	1015 mb / 30 In
June	17°C / 63°F	9°C / 49°F	13°C / 56°F	192 hours	91.74 mm / 3.61 In	7 days	1012 mb / 30 In
July	22°C / 71°F	14°C / 57°F	18°C / 64°F	218 hours	88.47 mm / 3.48 In	7 days	1013 mb / 30 In
August	21°C / 71°F	14°C / 57°F	17°C / 63°F	229 hours	83.59 mm / 3.29 In	7 days	1013 mb / 30 In
September	17°C / 63°F	10°C / 50°F	14°C / 56°F	195 hours	90.92 mm / 3.58 In	6 days	1015 mb / 30 In
October	9°C / 49°F	4°C / 39°F	6°C / 44°F	136 hours	70.02 mm / 2.76 In	7 days	1014 mb / 30 In
November	2°C / 36°F	-3°C / 26°F	-1°C / 31°F	112 hours	59.08 mm / 2.33 In	8 days	1016 mb / 30 In
December	-5°C / 24°F	-10°C / 13°F	-8°C / 18°F	81 hours	56.36 mm / 2.22 In	9 days	1017 mb / 31 In

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